33 lines
1.1 KiB
TypeScript
33 lines
1.1 KiB
TypeScript
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import { EventManager } from './EventManager'
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// 装饰器工厂函数
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export function Ob(eventName?: string) {
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return function (target: any, propertyKey: string) {
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// 存储原始值的弱映射
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const privateMap = new WeakMap()
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// 定义getter/setter
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Object.defineProperty(target, propertyKey, {
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get: function () {
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return privateMap.get(this)?.value
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},
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set: function (newValue) {
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const oldValue = privateMap.get(this)?.value
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if (oldValue == newValue) return
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privateMap.set(this, { value: newValue })
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// 触发事件
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const eventMgr = EventManager.Instance()
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const finalEventName = eventName || `${target.constructor.name.toLowerCase()}:${propertyKey}`
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const data = { property: propertyKey, oldValue, newValue }
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eventMgr.Emit(finalEventName, data)
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// 触发通用事件
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const commEventName = `${target.constructor.name.toLowerCase()}:property`
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const commData = { property: propertyKey, oldValue, newValue }
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eventMgr.Emit(commEventName, commData)
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},
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enumerable: true,
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configurable: true,
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})
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}
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}
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